Home / 30,104.36-45,156.64-7,915.87

Finding the Fourth Proportional to 30,104.36, 45,156.64 and 7,915.87

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Solution

The fourth proportional to 30,104.36, 45,156.64 and 7,915.87 is: 11,873.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,104.36 : 45,156.64 = 7,915.87 : x
  2. Step 2: Convert to fraction form
    30,104.36/45,156.64 = 7,915.87/x
  3. Step 3: Cross multiply
    30,104.36x = 45,156.64 × 7,915.87
  4. Step 4: Simplify right side
    30,104.36x = 357,454,091.88
  5. Step 5: Solve for x
    x = 357,454,091.88/30,104.36
  6. Step 6: Final answer
    x = 11,873.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.